Multi-axle Vehicle Steering Stability Of Steering System And Experimental Research

This article coupling mechanism of multiphase six parallelogram connecting rod steering system as the research content,discusses the stability of multi-axis steering system,has carried on the theoretical analysis and simulation analysis,design and test.Mainly established the mathematical model of the steering mechanism,multi-axis vehicle linear two degree of freedom model and geometric model of steering wheel,steering system for theoretical analysis,finally through the test of multi-axis steering system coordination.First of all,stability analysis of steering mechanism,mainly to the steering resistance moment,tire static steering torque is analyzed,by using the method of matrix transformation and gravity back positive moment,and then deduce the calculation formula of spin torque,and use MATLAB to find the correlation curve,and visual C#software again to find the driving force of the contrast analysis,it is concluded that the change of the two different ways to find the curve,the rotation of the steering wheel in the range of Qu Dong Li range is not big,in the process of steering is smooth.Second multi-axle steering system for steering stability and coordination analysis,establish two degree of freedom model and linear differential equation,the relevant state space matrix and transfer function is derived,the stability of different speed mode is analyzed and compared,it is concluded that low speed cases than the responsive,high flexibility,at the same time,it is concluded that the axis to have good coordination.Then,analysis of wheel camber Angle and toe-in value on steering system of the steering stability,the influence of a mathematic model of the former bunch of value and camber Angle,after the matching formula was derived based on MATLAB and the corresponding value.Finally,using the theory of error control experiment design,in turn all round corner test analysis,the relationship between the Angle to the wheel and drive rod Angle test analysis,and the driving force of the shaft under different loading conditions test analysis,test value and simulation value good result,verify the steering system of coordination.